X-Git-Url: http://git.kpe.io/?p=ctsim.git;a=blobdiff_plain;f=libctsim%2Fctndicom.cpp;h=36dbeb162e7ad295949b45ef566226ff06bf7065;hp=8501a0f3a34c6c29f5ade8ce2687026d1a087e82;hb=4cdd078f0f198a00e8037e6edec0eb30a6861bae;hpb=134461a6b28beafafdececf7b1f90f4211b56f6b diff --git a/libctsim/ctndicom.cpp b/libctsim/ctndicom.cpp index 8501a0f..36dbeb1 100644 --- a/libctsim/ctndicom.cpp +++ b/libctsim/ctndicom.cpp @@ -9,7 +9,7 @@ ** This is part of the CTSim program ** Copyright (c) 1983-2001 Kevin Rosenberg ** -** $Id: ctndicom.cpp,v 1.6 2001/03/05 21:59:55 kevin Exp $ +** $Id: ctndicom.cpp,v 1.7 2001/03/07 16:34:47 kevin Exp $ ** ** This program is free software; you can redistribute it and/or modify ** it under the terms of the GNU General Public License (version 2) as @@ -93,8 +93,22 @@ DicomImporter::loadImage(unsigned short iNRows, unsigned short iNCols, unsigned } } - DCM_ELEMENT elemPixelData = {DCM_PXLPIXELDATA, DCM_OT, "", 1, 0, NULL}; + char szRescaleSlope[17]; + char szRescaleIntercept[17]; + double dRescaleSlope = 1; + double dRescaleIntercept = 0; + DCM_ELEMENT elemRescaleSlope = {DCM_IMGRESCALESLOPE, DCM_DS, "", 1, strlen(szRescaleSlope), szRescaleSlope}; + DCM_ELEMENT elemRescaleIntercept = {DCM_IMGRESCALEINTERCEPT, DCM_DS, "", 1, strlen(szRescaleIntercept), szRescaleIntercept}; + if (DCM_ParseObject (&m_pFile, &elemRescaleSlope, 1, NULL, 0, NULL) == DCM_NORMAL) { + if (sscanf (szRescaleSlope, "%lf", &dRescaleSlope) != 1) + sys_error (ERR_SEVERE, "Error parsing rescale slope"); + } + if (DCM_ParseObject (&m_pFile, &elemRescaleIntercept, 1, NULL, 0, NULL) == DCM_NORMAL) { + if (sscanf (szRescaleIntercept, "%lf", &dRescaleIntercept) != 1) + sys_error (ERR_SEVERE, "Error parsing rescale intercept"); + } + DCM_ELEMENT elemPixelData = {DCM_PXLPIXELDATA, DCM_OT, "", 1, 0, NULL}; // Get the actual pixel data (the only other required element) if (DCM_GetElementSize (&m_pFile, elemPixelData.tag, &lRtnLength) != DCM_NORMAL) { m_bFail = true; @@ -150,7 +164,7 @@ DicomImporter::loadImage(unsigned short iNRows, unsigned short iNCols, unsigned unsigned char cV1 = pRawPixels[lBase]; unsigned char cV2 = pRawPixels[lBase+1] & iMask; int iV = cV1 + (cV2 << 8); - v[ix][iy] = iV / dScale; + v[ix][iy] = iV * dRescaleSlope + dRescaleIntercept; } } } @@ -211,8 +225,191 @@ DicomImporter::loadProjections() DicomImporter::~DicomImporter() { - DCM_CloseObject (&m_pFile); + if (m_pFile) + DCM_CloseObject (&m_pFile); +} + + +DicomExporter::DicomExporter (ImageFile* pImageFile) +: m_pImageFile(pImageFile), m_pObject(NULL) +{ + DCM_Debug (FALSE); + if (! pImageFile) { + m_bFail = true; + m_strFailMessage = "Initialized DicomExported with NULL imagefile"; + return; + } + m_bFail = ! createDicomObject(); +} + +DicomExporter::~DicomExporter () +{ + if (m_pObject) + DCM_CloseObject (&m_pObject); +} + +bool +DicomExporter::writeFile (const char* const pszFilename) +{ + if (! m_pObject) + return false; + + m_strFilename = pszFilename; + + CONDITION cond = DCM_WriteFile (&m_pObject, DCM_ORDERLITTLEENDIAN, pszFilename); + if (cond != DCM_NORMAL) { + m_bFail = true; + m_strFailMessage = "Error writing DICOM file "; + m_strFailMessage += pszFilename; + return false; + } + + return true; +} + +bool +DicomExporter::createDicomObject() +{ + CONDITION cond = DCM_CreateObject (&m_pObject, 0); + if (cond != DCM_NORMAL) { + m_bFail = true; + m_strFailMessage = "Error creating DICOM object"; + return false; + } + + double dMin, dMax; + m_pImageFile->getMinMax (dMin, dMax); + double dWidth = dMax - dMin; + if (dWidth == 0.) + dWidth = 1E-7; + double dScale = 65535. / dWidth; + + double dRescaleIntercept = -dMin; + double dRescaleSlope = 1 / dScale; + char szRescaleIntercept[17]; + char szRescaleSlope[17]; + snprintf (szRescaleIntercept, sizeof(szRescaleIntercept), "%e", dRescaleIntercept); + snprintf (szRescaleSlope, sizeof(szRescaleIntercept), "%e", dRescaleSlope); + + char szModality[] = "CT"; + char szSOPClassUID[65] = "1.2.840.10008.5.4.1.1.2"; + char szImgPhotometricInterp[] = "MONOCHROME2"; + char szPixelSpacing[33] = "0\\0"; + char szRelImageOrientationPatient[100] = "1\\0\\0\\0\\1\\0"; + char szRelImagePositionPatient[49] = "0\\0\\0"; + char szAcqKvp[] = "0"; + char szRelAcquisitionNumber[] = "1"; + char szRelImageNumber[] = "1"; + char szIDSOPInstanceUID[] = ""; + char szIDManufacturer[] = "CTSim"; + char szRelPositionRefIndicator[] = "0"; + char szRelFrameOfReferenceUID[] = ""; + char szRelSeriesNumber[] = "1"; + char szIDAccessionNumber[] = "0"; + char szRelStudyID[] = "1"; + char szIDReferringPhysician[] = "NONE"; + char szIDStudyTime[] = "000000.0"; + char szIDStudyDate[] = "00000000"; + char szRelStudyInstanceUID[] = ""; + char szPatSex[] = "O"; + char szPatBirthdate[] = "0000000"; + char szPatID[] = "NONE"; + char szPatName[] = "NONE"; + char szIDImageType[] = "ORIGINAL"; + char szIDManufacturerModel[65] = ""; + +#ifdef VERSION + snprintf (szIDManufacturerModel, sizeof(szIDManufacturerModel), "VERSION %s", VERSION); +#endif + snprintf (szPixelSpacing, sizeof(szPixelSpacing), "%e\\%e", m_pImageFile->axisIncrementX(), m_pImageFile->axisIncrementY()); + double minX, maxX, minY, maxY; + if (m_pImageFile->getAxisExtent(minX, maxX, minY, maxY)) { + minX += m_pImageFile->axisIncrementX() / 2; + minY += m_pImageFile->axisIncrementY() / 2; + snprintf(szRelImagePositionPatient, sizeof(szRelImagePositionPatient), "%e\\%e\\0", minX, minY); + } + + unsigned short iNRows = m_pImageFile->ny(); + unsigned short iNCols = m_pImageFile->nx(); + unsigned short iBitsAllocated = 16; + unsigned short iBitsStored = 16; + unsigned short iHighBit = 15; + unsigned short iPixRep = 0; + unsigned short iSamplesPerPixel = 1; + DCM_ELEMENT aElemRequired[] = { + {DCM_IMGROWS, DCM_US, "", 1, sizeof(iNRows), reinterpret_cast(&iNRows)}, + {DCM_IMGCOLUMNS, DCM_US, "", 1, sizeof(iNCols), reinterpret_cast(&iNCols)}, + {DCM_IMGBITSALLOCATED, DCM_US, "", 1, sizeof(iBitsAllocated), reinterpret_cast(&iBitsAllocated)}, + {DCM_IMGBITSSTORED, DCM_US, "", 1, sizeof(iBitsStored), reinterpret_cast(&iBitsStored)}, + {DCM_IMGHIGHBIT, DCM_US, "", 1, sizeof(iHighBit), reinterpret_cast(&iHighBit)}, + {DCM_IMGPIXELREPRESENTATION, DCM_US, "", 1, sizeof(iPixRep), reinterpret_cast(&iPixRep)}, + {DCM_IMGSAMPLESPERPIXEL, DCM_US, "", 1, sizeof(iSamplesPerPixel), reinterpret_cast(&iSamplesPerPixel)}, + {DCM_IMGRESCALESLOPE, DCM_DS, "", 1, strlen(szRescaleSlope), szRescaleSlope}, + {DCM_IMGRESCALEINTERCEPT, DCM_DS, "", 1, strlen(szRescaleIntercept), szRescaleIntercept}, + {DCM_IMGPHOTOMETRICINTERP, DCM_CS, "", 1, strlen(szImgPhotometricInterp), szImgPhotometricInterp}, + {DCM_IMGPIXELSPACING, DCM_DS, "", 1, strlen(szPixelSpacing), szPixelSpacing}, + {DCM_RELIMAGEORIENTATIONPATIENT, DCM_DS, "", 1, strlen(szRelImageOrientationPatient), szRelImageOrientationPatient}, + {DCM_RELIMAGEPOSITIONPATIENT, DCM_DS, "", 1, strlen(szRelImagePositionPatient), szRelImagePositionPatient}, + {DCM_ACQKVP, DCM_DS, "", 1, strlen(szAcqKvp), szAcqKvp}, + {DCM_RELACQUISITIONNUMBER, DCM_IS, "", 1, strlen(szRelAcquisitionNumber), szRelAcquisitionNumber}, + {DCM_ACQSLICETHICKNESS, DCM_DS, "", 1, strlen(szRelAcquisitionNumber), szRelAcquisitionNumber}, + {DCM_RELIMAGENUMBER, DCM_IS, "", 1, strlen(szRelImageNumber), szRelImageNumber}, + {DCM_IDSOPINSTANCEUID, DCM_UI, "", 1, strlen(szIDSOPInstanceUID), szIDSOPInstanceUID}, + {DCM_IDMANUFACTURER, DCM_LO, "", 1, strlen(szIDManufacturer), szIDManufacturer}, + {DCM_RELPOSITIONREFINDICATOR, DCM_LO, "", 1, strlen(szRelPositionRefIndicator), szRelPositionRefIndicator}, + {DCM_RELFRAMEOFREFERENCEUID, DCM_UI, "", 1, strlen(szRelFrameOfReferenceUID), szRelFrameOfReferenceUID}, + {DCM_RELSERIESNUMBER, DCM_IS, "", 1, strlen(szRelSeriesNumber), szRelSeriesNumber}, + {DCM_RELSERIESINSTANCEUID, DCM_UI, "", 1, strlen(szIDAccessionNumber), szIDAccessionNumber}, + {DCM_IDACCESSIONNUMBER, DCM_SH, "", 1, strlen(szIDAccessionNumber), szIDAccessionNumber}, + {DCM_RELSTUDYID, DCM_SH, "", 1, strlen(szRelStudyID), szRelStudyID}, + {DCM_IDREFERRINGPHYSICIAN, DCM_PN, "", 1, strlen(szIDReferringPhysician), szIDReferringPhysician}, + {DCM_IDSTUDYTIME, DCM_TM, "", 1, strlen(szIDStudyTime), szIDStudyTime}, + {DCM_IDSTUDYDATE, DCM_DA, "", 1, strlen(szIDStudyDate), szIDStudyDate}, + {DCM_RELSTUDYINSTANCEUID, DCM_UI, "", 1, strlen(szRelStudyInstanceUID), szRelStudyInstanceUID}, + {DCM_PATSEX, DCM_CS, "", 1, strlen(szPatSex), szPatSex}, + {DCM_PATBIRTHDATE, DCM_DA, "", 1, strlen(szPatBirthdate), szPatBirthdate}, + {DCM_PATID, DCM_LO, "", 1, strlen(szPatID), szPatID}, + {DCM_PATNAME, DCM_PN, "", 1, strlen(szPatName), szPatName}, + {DCM_IDIMAGETYPE, DCM_CS, "", 1, strlen(szIDImageType), szIDImageType}, + {DCM_IDMODALITY, DCM_CS, "", 1, strlen(szModality), szModality}, + {DCM_IDSOPCLASSUID, DCM_UI, "", 1, strlen(szSOPClassUID), szSOPClassUID}, + {DCM_IDMANUFACTURERMODEL, DCM_LO, "", 1, strlen(szIDManufacturerModel), szIDManufacturerModel}, + }; + int nElemRequired = sizeof (aElemRequired) / sizeof(DCM_ELEMENT); + + int iUpdateCount; + cond = DCM_ModifyElements (&m_pObject, aElemRequired, nElemRequired, NULL, 0, &iUpdateCount); + + + DCM_ELEMENT elemPixelData = {DCM_PXLPIXELDATA, DCM_OT, "", 1, 0, NULL}; + + unsigned long lRealLength = 2 * m_pImageFile->nx() * m_pImageFile->ny(); + + unsigned char* pRawPixels = new unsigned char [lRealLength]; + elemPixelData.length = lRealLength; + elemPixelData.d.ot = pRawPixels; + + ImageFileArray v = m_pImageFile->getArray(); + for (int iy = iNRows - 1; iy >= 0; iy--) { + for (int ix = 0; ix < iNCols; ix++) { + unsigned long lBase = (iy * iNRows + ix) * 2; + unsigned int iValue = nearest(dScale * (v[ix][iy] - dMin)); + pRawPixels[lBase] = iValue & 0xFF; + pRawPixels[lBase+1] = (iValue & 0xFF00) >> 8; + } + } + cond = DCM_ModifyElements (&m_pObject, &elemPixelData, 1, NULL, 0, &iUpdateCount); + delete pRawPixels; + + if (cond != DCM_NORMAL || iUpdateCount != 1) { + m_bFail = true; + m_strFailMessage = "Error modifying pixel data"; + return false; + } + + return true; } #endif // HAVE_CTN_DICOM +